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Barcode removal

a barcode and marking technology, applied in the field of barcode removal, can solve the problems of storing electronic copies of all documents, affecting the quality of document images, and reducing the maximum size of barcode markings,

Inactive Publication Date: 2009-06-25
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]The described method uses intermediate information from barcode decoding to help the barcode removal. This intermediate information allows accurate determination of the location of the barcode markings on the scanned bitmap. Accurate determination of mark locations allows removal with minimal damage to the background.

Problems solved by technology

This method can result in significant loss of document image quality, and a limit on the maximum size of barcode markings.
While this gives the reproduced document excellent quality, storing electronic copies of all documents is an unwieldy solution and is, thus, rarely desirable.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0053]It is to be noted that any discussions contained in this specification that relate to prior art arrangements, refer to documents or devices which form public knowledge through their respective publication and / or use. Such discussions, however, should not be interpreted as a representation by the present inventor(s) or patent applicant that such documents or devices in any way form part of the common general knowledge in the art.

Basic Structure

[0054]In the examples provided hereinafter, data is stored in the barcode using a modulated grid. FIG. 1 shows an enlarged view of the appearance of one embodiment of such a modulated grid. The illustrated modulated grid consists of a large number of encoding symbols, in the form of dots 102 and 104 that lie close to the intersection points 103 of a square grid 101. It should be noted that it is only the dots 102 and 104 that form the visible modulated grid. The lines forming grid 101 are shown only for the purpose of illustrating the loc...

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PUM

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Abstract

A method of removing a barcode from the bitmap representation of a document is disclosed. The barcode comprises a plurality of data encoding symbols (102) and (104). The method starts with the step of scanning said document containing the barcode to form the bitmap representation of the at least a portion of the document. From said bitmap representation, the plurality of data encoding symbols (102) and (104), defining said barcode, are identified and the barcode is decoded at least partially. The locations of data encoding symbols (102) and (104) in the bitmap representation of said document are then identified, using data obtained during the at least partial decoding of said barcode. Finally, at least some of the data encoding symbols (102) and (104) are removed from said bitmap representation of said document.

Description

CROSS-REFERENCE TO RELATED PATENT APPLICATIONS[0001]This application claims the right of priority under 35 U.S.C. § 119 based on Australian Patent Application No. 2007254619, filed on 21 Dec. 2007, which is incorporated by reference herein in its entirety as if fully set forth herein.FIELD OF INVENTION[0002]The current disclosure relates to a method for removing printed barcodes, and in particular to a method for identifying, locating and removing barcodes from the bitmap representation of a scanned page. The disclosure also relates to an apparatus and to a computer program product, including a computer readable medium having recorded thereon a computer program, for effecting the barcode removal.RELATED BACKGROUND ART[0003]Many methods exist for discretely storing data on a printed document. One method includes printing a two-dimensional barcode onto the background of a document. Often, such a barcode is designed to have low visibility to minimise the reduction of readability in the...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G06F19/00
CPCG06K7/10722
Inventor CHEUNG, ERIC LAP MINFIELDS, ANDREW JAMES
Owner CANON KK
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